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With reference to Tsunami, consider the following statements:
(1) Tsunamis are only generated by undersea earthquakes and volcanic eruptions.
(2) As it approaches the shore, its velocity increases.
(3) The 2004 Tsunami was caused by an undersea earthquake off the coast of Sumatra.
Which of the above statement(s) is/are correct?
(1) Tsunamis are only generated by undersea earthquakes and volcanic eruptions.
(2) As it approaches the shore, its velocity increases.
(3) The 2004 Tsunami was caused by an undersea earthquake off the coast of Sumatra.
Which of the above statement(s) is/are correct?
- a)Only 1 and 2
- b)Only 2 and 3
- c)Only 3
- d)All of the above
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
With reference to Tsunami, consider the following statements:(1) Tsuna...
Explanation:
Tsunamis are large ocean waves that are caused by sudden movement of the ocean due to earthquakes, volcanic eruptions, or landslides. Here are the explanations for each statement:
1) Tsunamis are only generated by undersea earthquakes and volcanic eruptions.
This statement is incorrect. While undersea earthquakes and volcanic eruptions are the most common causes of tsunamis, they can also be caused by landslides, glacier calvings, and even meteor impacts.
2) As it approaches the shore, its velocity increases.
This statement is true. As a tsunami wave reaches shallower water near the coast, its velocity decreases due to friction with the seabed. However, since the wave's energy is conserved, its height increases, which can result in catastrophic damage to coastal communities.
3) The 2004 Tsunami was caused by an undersea earthquake off the coast of Sumatra.
This statement is correct. The 2004 Indian Ocean tsunami, also known as the Boxing Day tsunami, was caused by a 9.1 magnitude undersea earthquake off the coast of Sumatra. The tsunami killed over 200,000 people in 14 countries and caused widespread destruction.
Therefore, the correct answer is option C, only statement 3 is correct.
Tsunamis are large ocean waves that are caused by sudden movement of the ocean due to earthquakes, volcanic eruptions, or landslides. Here are the explanations for each statement:
1) Tsunamis are only generated by undersea earthquakes and volcanic eruptions.
This statement is incorrect. While undersea earthquakes and volcanic eruptions are the most common causes of tsunamis, they can also be caused by landslides, glacier calvings, and even meteor impacts.
2) As it approaches the shore, its velocity increases.
This statement is true. As a tsunami wave reaches shallower water near the coast, its velocity decreases due to friction with the seabed. However, since the wave's energy is conserved, its height increases, which can result in catastrophic damage to coastal communities.
3) The 2004 Tsunami was caused by an undersea earthquake off the coast of Sumatra.
This statement is correct. The 2004 Indian Ocean tsunami, also known as the Boxing Day tsunami, was caused by a 9.1 magnitude undersea earthquake off the coast of Sumatra. The tsunami killed over 200,000 people in 14 countries and caused widespread destruction.
Therefore, the correct answer is option C, only statement 3 is correct.
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Community Answer
With reference to Tsunami, consider the following statements:(1) Tsuna...
Volcanic eruptions, submarine landslides, and coastal rock falls can also generate a tsunami, as can a large asteroid impacting the ocean. Option 1 is incorrect.
As a tsunami enters shallow water near land, it slows down, wavelengths decrease, waves grow in height, and currents intensify. option 2 is also incorrect.
As a tsunami enters shallow water near land, it slows down, wavelengths decrease, waves grow in height, and currents intensify. option 2 is also incorrect.
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With reference to Tsunami, consider the following statements:(1) Tsunamis are only generated by undersea earthquakes and volcanic eruptions.(2) As it approaches the shore, its velocity increases.(3) The 2004 Tsunami was caused by an undersea earthquake off the coast of Sumatra.Which of the above statement(s) is/are correct?a)Only 1 and 2b)Only 2 and 3c)Only 3d)All of the aboveCorrect answer is option 'C'. Can you explain this answer?
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